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Measurements of Characteristic Curves in a Computed Radiographic System (I)
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- UEDA Katsuhiko
- Department of Radiology, Yamaguchi University Hospital
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- MORISHITA Junji
- Department of Radiology, Yamaguchi University Hospital
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- FUJIKAWA Tsuyoshi
- Department of Radiology, Yamaguchi University Hospital
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- OHTSUKA Akiyoshi
- Department of Radiology, Yamaguchi University Hospital
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- FUJITA Hiroshi
- Department of Electrical Engineering, Gifu National College of Technology
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- YAMAUCHI Syuichi
- Department of Radiology, Yamaguchi University Hospital
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- HASHIDA Masahiro
- Department of Radiology, Yamaguchi University Hospital
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- NISHIHARA Sadamitsu
- Department of Radiology, Yamaguchi University Hospital
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- KANAI Kazumi
- Department of Radiology, Yamaguchi University Hospital
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- NAKANISHI Takashi
- Department of Radiology, Yamaguchi University Hospital
Bibliographic Information
- Other Title
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- コンピューテッドラジオグラフィの特性曲線の測定(I)
Description
We measured the system response of a computed radiographic (CR) system with photostimulable phosphors (imaging plate: IP), as three different types of curves, which are the “digital” characteristic curve relating the output pixel value to the input relative x-ray intensity, the calibration curve relating the output photographic density to the input pixel value, and the “overall” characteristic curve relating the output density to the input relative x-ray intensity. The digital characteristic curves showed a considerably wider dynamic range (102.83) than that of the conventional screen-film system. However, this measured dynamic range was narrower than the nominal dynamic range (103.3) of the CR system. The measured sensitivity of the CR system, on the other hand, agreed with the nominal sensitivity. Calibration curve and overall characteristic curve were linear on the plot within the density range of approximately 0.4 to 2.64. These curves measured in our study are useful for quantitative analysis in a CR system.
Journal
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- Medical Imaging and Information Sciences
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Medical Imaging and Information Sciences 5 (2), 52-59, 1988
Medical Imaging and Information Sciences
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Details 詳細情報について
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- CRID
- 1390001205455463168
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- NII Article ID
- 130004647690
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- ISSN
- 09101543
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed